CN113735468A - Waste incineration fly ash recycling treatment system and method coupled with waste incineration - Google Patents
Waste incineration fly ash recycling treatment system and method coupled with waste incineration Download PDFInfo
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- CN113735468A CN113735468A CN202111098270.7A CN202111098270A CN113735468A CN 113735468 A CN113735468 A CN 113735468A CN 202111098270 A CN202111098270 A CN 202111098270A CN 113735468 A CN113735468 A CN 113735468A
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- waste incineration
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention relates to the technical field of waste incineration fly ash treatment, in particular to a waste incineration fly ash recycling treatment system and method coupled with waste incineration; through setting up the washing case in the outer container, wash the incasement and put into water, medicament and flying dust, the opening part at the outer container is established to the case lid cover, the live-rollers sets up on the case lid, and stretch into the inside of washing case, drive motor drive by on the case lid rotates, puddler and live-rollers fixed connection, it is rotatory to follow the live-rollers, water in the washing case, medicament and flying dust are stirred, wash the flying dust, after the washing is accomplished, the flying dust after will washing is leading-in to be dried in the stoving subassembly, then sinter in leading-in washing production subassembly, and then get rid of the chloride in the flying dust through the method of washing before the cement sintering, avoid causing the corruption to the cement rotary kiln body, ensure the safe handling of cement rotary kiln body.
Description
Technical Field
The invention relates to the technical field of waste incineration fly ash treatment, in particular to a waste incineration fly ash recycling treatment system and method coupled with waste incineration.
Background
The waste incineration fly ash is residue collected in the process of coupling waste incineration, has great toxicity hazard, and can enter a household garbage landfill after being treated. The method for producing cement by burning the fly ash generated after the waste incineration at high temperature by using the cement rotary kiln is an effective method for eliminating toxicity in the fly ash generated after the waste incineration, can also change waste into valuable, saves resources and realizes the reclamation of the fly ash generated after the waste incineration.
However, the fly ash from waste incineration has high content of chloride, and in the process of producing cement by high-temperature incineration, the fly ash from waste incineration has adverse effects such as high-temperature chlorine corrosion on the rotary cement kiln body.
Disclosure of Invention
The invention aims to provide a waste incineration fly ash recycling treatment system and method coupled with waste incineration, and aims to solve the technical problem that the waste incineration fly ash in the prior art has high chloride content and can generate high-temperature chlorine corrosion and other adverse effects on a cement rotary kiln body in the process of producing cement by high-temperature incineration.
In order to achieve the purpose, the waste incineration fly ash recycling treatment system coupled with waste incineration comprises an outer box, a water washing box, a box cover, a rotating roller, a stirring rod, a drying assembly and a cement production assembly;
the washing case with outer container fixed connection to be located the inside of outer container, the case lid with the outer container can be dismantled and connect, and is located the opening part of outer container, the live-rollers with the case lid rotates to be connected, and stretches into the inside of washing case, the puddler with live-rollers fixed connection, and be located the live-rollers is close to one side of washing case, the stoving subassembly is used for drying the flying dust after the washing, the cement production subassembly is used for burning the flying dust after drying into cement.
Set up in the outer container the washing case, be used for in the washing case to drain, medicament and flying dust, the case lid cover is established the opening part of outer container is connected the live-rollers, the live-rollers by the motor drive of installation is rotatory on the case lid, the puddler with live-rollers fixed connection follows the live-rollers rotates, will water washing incasement water, medicament and flying dust stir, realize the washing, and the flying dust after will washing is leading-in dry in the subassembly of drying, then leading-in cement clinker burns into in the cement production subassembly.
The coupling waste incineration fly ash recycling treatment system further comprises an aeration plate, and the aeration plate is fixedly connected with the water washing box and is located inside the water washing box.
The aeration plate is arranged in the water washing tank, is externally connected with an air pump, and leads carbon dioxide into the water washing tank, thereby being beneficial to washing fly ash.
The coupling waste incineration fly ash recycling treatment system further comprises an ultrasonic generator, wherein the ultrasonic generator is fixedly connected with the outer container and is positioned between the outer container and the water washing box.
The ultrasonic generator is arranged between the water washing tank and the outer tank, and sends ultrasonic waves to cause the vibration of the mixed solution in the water washing tank, so that the water washing effect is improved.
The drying assembly comprises a conveying pipe and a heating component, wherein the conveying pipe is used for conveying the washed fly ash; the heating member is located outside the delivery tube.
The fly ash after washing is conveyed by a conveying pipe, the heating component is arranged at the outer side of the conveying pipe, and the fly ash is indirectly dried by using the waste heat of the flue gas in the waste incineration system.
The heating member comprises a heating outer pipe and a drainage component, the heating outer pipe is fixedly connected with the conveying pipe, is positioned outside the conveying pipe and forms an accommodating space with the conveying pipe; the drainage component is communicated with the accommodating space.
The heating outer pipe covers the outer side of the conveying pipe, and the high-temperature flue gas is introduced into the containing space by using the drainage component, so that the fly ash in the conveying pipe is dried.
The cement production assembly comprises a mixing bin and a rotary cement kiln, the mixing bin is communicated with the conveying pipe, and the rotary cement kiln is used for burning fly ash into cement.
And introducing the dried fly ash into the mixing bin, mixing the fly ash with the cement raw materials, introducing the mixture into the rotary cement kiln, and burning the mixture into cement clinker.
A method for recycling waste incineration fly ash coupled with waste incineration comprises the following steps:
obtaining a fly ash raw material, and introducing the fly ash raw material into a water washing tank for water washing to obtain the water-washed fly ash;
conveying the washed fly ash through a conveying pipe, and indirectly drying the fly ash by using waste heat smoke of a waste incineration system;
mixing the dried fly ash with cement raw materials to obtain a mixture;
and (3) conveying the mixture into a rotary cement kiln for sintering to obtain cement clinker.
Firstly, introducing an obtained fly ash raw material into the washing tank for washing, conveying the fly ash by using the conveying pipe after the washing is finished, drying the fly ash by using waste heat flue gas of a waste incineration system in the fly ash conveying process, introducing the dried fly ash into the mixing bin, mixing the dried fly ash with cement raw materials, and then conveying the mixture into the cement rotary kiln for memorial sintering to prepare cement clinker.
The method comprises the following steps of obtaining a fly ash raw material, introducing the fly ash raw material into a water washing tank for water washing to obtain the fly ash after water washing, and further comprises the following steps:
and introducing water and the fly ash raw material into the washing tank according to a certain proportion, mixing and stirring, and introducing carbon dioxide gas into the washing tank by using an aeration plate while stirring to obtain the washed fly ash.
And introducing carbon dioxide into the water washing tank to promote the dissolution of heavy metal compounds in the waste incineration fly ash.
The invention relates to a garbage incineration fly ash recycling treatment system and method coupled with garbage incineration, wherein a water washing tank is arranged in an outer box, the water washing box is filled with water, medicament and fly ash, the box cover is covered at the opening of the outer box, the rotating roller is arranged on the box cover, and extends into the water washing tank and is driven by a driving motor on the tank cover to rotate, the stirring rod is fixedly connected with the rotating roller and rotates along with the rotating roller to stir the water, the medicament and the fly ash in the water washing tank, washing the fly ash with water, introducing the washed fly ash into the drying component for drying after the washing with water is finished, and then the fly ash is led into the washing production assembly for sintering, and chloride in the fly ash is removed by a washing method before cement sintering, so that the cement rotary kiln body is prevented from being corroded, and the safe use of the cement rotary kiln body is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the outer case of the present invention.
Fig. 2 is a cross-sectional view of the outer case of the present invention.
Fig. 3 is a schematic structural view of a drying assembly of the present invention.
Fig. 4 is a sectional view of a drying assembly of the present invention.
FIG. 5 is a schematic view of a waste incineration fly ash recycling system coupled with waste incineration according to the present invention.
FIG. 6 is a step diagram of a method for recycling fly ash from waste incineration in accordance with the present invention.
1-outer box, 2-water washing box, 3-box cover, 4-rotating roller, 5-stirring rod, 6-aeration plate, 7-ultrasonic generator, 10-drying component, 11-conveying pipe, 12-heating component, 20-cement production component, 21-mixing bin, 22-cement rotary kiln, 100-coupled garbage incineration fly ash recycling treatment system, 121-heating outer pipe, 122-drainage component, 1221-leading-in pipe, 1222-leading-out pipe, 1223-fan, 1224-sealing ring and 1225-containing space.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 5, the present invention provides a waste incineration fly ash recycling system 100 coupled with waste incineration, which includes an outer box 1, a water washing box 2, a box cover 3, a rotating roller 4, a stirring rod 5, a drying assembly 10 and a cement production assembly 20;
washing case 2 with 1 fixed connection of outer container, and be located 1's inside of outer container, case lid 3 with outer container 1 can dismantle the connection, and is located 1's opening part, live-rollers 4 with 3 rotations of case lid are connected, and stretch into washing case 2's inside, puddler 5 with 4 fixed connection of live-rollers, and be located live-rollers 4 are close to one side of washing case 2, stoving subassembly 10 is used for drying the flying dust after the washing, cement production subassembly 20 is used for burning the flying dust after the stoving into cement.
In the embodiment, the water washing tank 2 is fixedly connected with the outer tank 1, a containing cavity is formed between the water washing tank 2 and the outer tank 1, other equipment is convenient to install, meanwhile, the outer tank 1 plays a role in protection, the water washing tank 2 is used for containing water and fly ash, the tank cover 3 is covered at an opening of the outer tank 1 and covers the opening of the water washing tank 2, internal stirring is facilitated, the rotating roller 4 is arranged on the tank cover 3 and extends into the water washing tank 2, the rotating roller 4 is driven by a driving motor on the tank cover 3 to rotate, the stirring rod 5 is fixedly connected with the rotating roller 4 and rotates along with the rotating roller 4, the fly ash and the water in the water washing tank 2 are stirred, the fly ash is washed, chloride in the fly ash is fully dissolved in water, and finally the solution is filtered to obtain the fly ash after the water washing, and the washed fly ash is led into the drying component 10 for drying, and then is led into the cement production component 20 for sintering after being dried, so as to be fired into cement clinker, further remove chloride in the fly ash before sintering, avoid chloride from accelerating the corrosion of the rotary cement kiln 22 body, and ensure the safe use of the rotary cement kiln 22 body.
Further, referring to fig. 2, the waste incineration fly ash recycling treatment system 100 coupled with waste incineration further includes an aeration plate 6, and the aeration plate 6 is fixedly connected with the water washing tank 2 and is located inside the water washing tank 2.
In the embodiment, the aeration plate 6 is XGB6B, is arranged in the water washing tank 2 and is externally connected with a carbon dioxide generator, carbon dioxide gas is introduced into the water washing tank 2 by using the aeration plate 6, and the ratio of the carbon dioxide to the waste incineration fly ash is 1L/min:1Kg, so that the dissolution of heavy metal compounds in the waste incineration fly ash is promoted, and the water washing effect is improved.
Further, referring to fig. 2, the waste incineration fly ash recycling treatment system 100 coupled with waste incineration further includes an ultrasonic generator 7, wherein the ultrasonic generator 7 is fixedly connected with the outer tank 1 and is located between the outer tank 1 and the water washing tank 2.
In this embodiment, the model of the ultrasonic generator 7 is DG822, and the ultrasonic generator is arranged between the outer box 1 and the water washing box 2, and operates to emit ultrasonic waves, so that the reaction effect of chloride and water is better, the removal effect of chloride is improved, further the corrosion of chloride to the rotary cement kiln 22 body is avoided, and the safe use of the rotary cement kiln 22 body is ensured.
Further, referring to fig. 3, 4 and 5, the drying assembly 10 includes a conveying pipe 11 and a heating member 12, wherein the conveying pipe 11 is used for conveying the washed fly ash; the heating member 12 is located outside the delivery pipe 11.
Further, referring to fig. 3 and 4, the heating member 12 includes an outer heating tube 121 and a drainage component 122, the outer heating tube 121 is fixedly connected to the conveying pipe 11, is located outside the conveying pipe 11, and forms an accommodating space 1225 with the conveying pipe 11; the drainage member 122 communicates with the accommodating space 1225.
Further, referring to fig. 3 and 4, the drainage component 122 includes an inlet pipe 1221, an outlet pipe 1222, and a blower 1223, where the inlet pipe 1221 is fixedly connected to the heating outer pipe 121 and is located on a side of the heating outer pipe 121 away from the conveying pipe 11; the delivery pipe 1222 is fixedly connected to the heating outer pipe 121 and is located on a side of the heating outer pipe 121 away from the inlet pipe 1221; the blower 1223 is detachably connected to the delivery pipe 1222 and is located on a side of the delivery pipe 1222 away from the heating outer pipe 121.
Further, referring to fig. 4, the drainage component 122 further includes a sealing ring 1224, and the sealing ring 1224 is fixedly connected to the delivery pipe 1222 and located between the delivery pipe 1222 and the blower 1223.
In this embodiment, water and fly ash are filtered to obtain fly ash after washing, the fly ash after washing is introduced into the conveying pipe 11, the fly ash is conveyed to the next step by the conveying pipe 11, the heating outer pipe 121 is fixed outside the conveying pipe 11 and forms the accommodating space 1225 with the conveying pipe 11, the introducing pipe 1221 is fixedly connected with the heating outer pipe 121 and is communicated with the accommodating space 1225, the leading-out pipe 1222 is fixedly connected with the heating outer pipe 121 and is communicated with the accommodating space 1225 and is located on one side of the heating outer pipe 121 far from the introducing pipe 1221, the fan 1223 is DC1204, is connected with the leading-out pipe 1222 through bolts and is used for exhausting air to the leading-out pipe 1222, the sealing ring 1224 is arranged between the fan 1223 and the leading-out pipe 1222 to prevent air leakage during air exhausting of the fan 1223, the exhaust effect is better, the inlet pipe 1221 is used for communicating waste heat flue gas exhausted from the waste incineration system, so that the waste heat flue gas is introduced into the accommodating space 1225, the fly ash is dried in the fly ash conveying process, subsequent fly ash firing is facilitated, resources are saved, the fan 1223 provides circulating power for the waste heat flue gas, the waste heat flue gas flows to the outlet pipe 1222, the outlet pipe 1222 is communicated with flue gas treatment equipment, the waste heat flue gas can be discharged into the environment after being treated, and environment protection is facilitated.
Further, referring to fig. 5, the cement production assembly 20 includes a mixing bin 21 and a rotary cement kiln 22, the mixing bin 21 is communicated with the conveying pipe 11, and the rotary cement kiln 22 is used for burning fly ash into cement.
In the present embodiment, the conveying pipe 11 guides the dried fly ash into the mixing bin 21, cement raw materials are added into the mixing bin 21, the cement raw materials are uniformly mixed by a mixer, and then the mixture is guided into the rotary cement kiln 22 together, the fly ash is burned into cement by a sintering process, resources are fully utilized, chlorides of the fly ash are removed before sintering, corrosion of the chlorides to the rotary cement kiln 22 is avoided, and safe use of the rotary cement kiln 22 is guaranteed.
Referring to fig. 6, a method for recycling fly ash from waste incineration by coupling with waste incineration includes the following steps:
s101: obtaining fly ash raw materials, introducing water and the fly ash raw materials into the water washing tank 2 according to a certain proportion, mixing and stirring, and introducing carbon dioxide gas into the water washing tank 2 by using an aeration plate 6 while stirring to obtain the washed fly ash;
s102: the washed fly ash is conveyed through a conveying pipe 11, and the fly ash is indirectly dried by using waste heat and smoke of a waste incineration system;
s103: mixing the dried fly ash with cement raw materials to obtain a mixture;
s104: the mixture is sent to a cement rotary kiln 22 for sintering, and cement clinker is fired.
In the present embodiment, firstly, fly ash is collected in a waste incineration system, water and fly ash are introduced into the water washing tank 2 at a ratio of 8:1, the water and fly ash are stirred by the rotating roller 4 and the stirring rod 5, chloride in fly ash is combined with water, and at the same time, carbon dioxide is introduced into the water washing tank 2 by the aeration plate 6, which is beneficial to improving the washing effect of chloride ions in fly ash, at this time, the ultrasonic generator 7 operates to emit ultrasonic waves to promote the reaction of chloride ions and water, so as to improve the washing effect of chloride ions, and then, the water-washed fly ash is conveyed through the conveying pipe 11, the heating member 12 outside the conveying pipe 11 indirectly dries the fly ash by using residual heat flue gas in the waste incineration system, which is beneficial to subsequent sintering, and then, the dried fly ash is introduced into the mixing bin 21, the fly ash and the cement raw materials are mixed by a stirrer, finally, the mixture is sent into the rotary cement kiln 22 for sintering to prepare cement clinker, chlorides are removed before the fly ash is sintered, the corrosion of the chlorides to the rotary cement kiln 22 is avoided, the safe use of the rotary cement kiln 22 is ensured, the cement is prepared at the same time, the waste is changed into valuable, and the waste incineration fly ash is recycled.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A waste incineration fly ash recycling treatment system coupled with waste incineration is characterized by comprising an outer box, a water washing box, a box cover, a rotating roller, a stirring rod, a drying assembly and a cement production assembly;
the washing case with outer container fixed connection to be located the inside of outer container, the case lid with the outer container can be dismantled and connect, and is located the opening part of outer container, the live-rollers with the case lid rotates to be connected, and stretches into the inside of washing case, the puddler with live-rollers fixed connection, and be located the live-rollers is close to one side of washing case, the stoving subassembly is used for drying the flying dust after the washing, the cement production subassembly is used for burning the flying dust after drying into cement.
2. The waste incineration fly ash recycling system of claim 1,
the coupled waste incineration fly ash recycling treatment system further comprises an aeration plate, and the aeration plate is fixedly connected with the water washing tank and is positioned inside the water washing tank.
3. The waste incineration fly ash recycling system of claim 1,
the coupling waste incineration fly ash recycling treatment system further comprises an ultrasonic generator, wherein the ultrasonic generator is fixedly connected with the outer container and is positioned between the outer container and the water washing box.
4. The waste incineration fly ash recycling system of claim 1,
the drying assembly comprises a conveying pipe and a heating component, wherein the conveying pipe is used for conveying the washed fly ash; the heating member is located outside the delivery tube.
5. The waste incineration fly ash recycling system of claim 4, wherein,
the heating component comprises a heating outer pipe and a drainage component, the heating outer pipe is fixedly connected with the conveying pipe, is positioned outside the conveying pipe and forms an accommodating space with the conveying pipe; the drainage component is communicated with the accommodating space.
6. The waste incineration fly ash recycling system of claim 4, wherein,
the cement production assembly comprises a mixing bin and a rotary cement kiln, the mixing bin is communicated with the conveying pipe, and the rotary cement kiln is used for burning fly ash into cement.
7. A waste incineration fly ash recycling treatment method coupled with waste incineration, which is applied to the waste incineration fly ash recycling treatment system coupled with waste incineration according to claim 1, and is characterized by comprising the following steps:
obtaining a fly ash raw material, and introducing the fly ash raw material into a water washing tank for water washing to obtain the water-washed fly ash;
conveying the washed fly ash through a conveying pipe, and indirectly drying the fly ash by using waste heat smoke of a waste incineration system;
mixing the dried fly ash with cement raw materials to obtain a mixture;
and (3) conveying the mixture into a rotary cement kiln for sintering to obtain cement clinker.
8. A method for recycling fly ash from waste incineration coupled with waste incineration according to claim 7, wherein a fly ash raw material is obtained and introduced into a water washing tank for water washing to obtain the water-washed fly ash, and the method further comprises:
and introducing water and the fly ash raw material into the washing tank according to a certain proportion, mixing and stirring, and introducing carbon dioxide gas into the washing tank by using an aeration plate while stirring to obtain the washed fly ash.
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